Download SNC 1DI - Practice Exam Answers

SNC 1PI
Practice Exam
Decide if the sentence is true or false. If the sentence is false,
rewrite it to make it correct.
(a) Physical changes result in the formation of new substances.
Decide if the sentence is true or false. If the sentence is false,
rewrite it to make it correct.
(a) Physical changes result in the formation of new substances.
•False - chemical changes result in a new substance
Decide if the sentence is true or false. If the sentence is false,
rewrite it to make it correct.
(a) Physical changes result in the formation of new substances.
•False - chemical changes result in a new substance
(b) A chemical property of salt is that it forms white crystals in the
shape of a cube.
Decide if the sentence is true or false. If the sentence is false,
rewrite it to make it correct.
(a) Physical changes result in the formation of new substances.
•False - chemical changes result in a new substance
(b) A chemical property of salt is that it forms white crystals in the
shape of a cube.
•False - a physical property of salt is that it forms white crystals
in the shape of a cube
Decide if the sentence is true or false. If the sentence is false,
rewrite it to make it correct.
(a) Physical changes result in the formation of new substances.
•False - chemical changes result in a new substance
(b) A chemical property of salt is that it forms white crystals in the
shape of a cube.
•False - a physical property of salt is that it forms white crystals
in the shape of a cube
(c) The formation of dew is a physical change.
Decide if the sentence is true or false. If the sentence is false,
rewrite it to make it correct.
(a) Physical changes result in the formation of new substances.
•False - chemical changes result in a new substance
(b) A chemical property of salt is that it forms white crystals in the
shape of a cube.
•False - a physical property of salt is that it forms white crystals
in the shape of a cube
(c) The formation of dew is a physical change.
•True
Decide if the sentence is true or false. If the sentence is false,
rewrite it to make it correct.
(a) Physical changes result in the formation of new substances.
•False - chemical changes result in a new substance
(b) A chemical property of salt is that it forms white crystals in the
shape of a cube.
•False - a physical property of salt is that it forms white crystals
in the shape of a cube
(c) The formation of dew is a physical change.
•True
(d) Non-metals are usually malleable and ductile.
Decide if the sentence is true or false. If the sentence is false,
rewrite it to make it correct.
(a) Physical changes result in the formation of new substances.
•False - chemical changes result in a new substance
(b) A chemical property of salt is that it forms white crystals in the
shape of a cube.
•False - a physical property of salt is that it forms white crystals
in the shape of a cube
(c) The formation of dew is a physical change.
•True
(d) Non-metals are usually malleable and ductile.
•False - metals are usually malleable and ductile
Decide if the sentence is true or false. If the sentence is false,
rewrite it to make it correct.
(a) Physical changes result in the formation of new substances.
•False - chemical changes result in a new substance
(b) A chemical property of salt is that it forms white crystals in the
shape of a cube.
•False - a physical property of salt is that it forms white crystals
in the shape of a cube
(c) The formation of dew is a physical change.
•True
(d) Non-metals are usually malleable and ductile.
•False - metals are usually malleable and ductile
(e) The starting substances in a reaction are called the products.
Decide if the sentence is true or false. If the sentence is false,
rewrite it to make it correct.
(a) Physical changes result in the formation of new substances.
•False - chemical changes result in a new substance
(b) A chemical property of salt is that it forms white crystals in the
shape of a cube.
•False - a physical property of salt is that it forms white crystals
in the shape of a cube
(c) The formation of dew is a physical change.
•True
(d) Non-metals are usually malleable and ductile.
•False - metals are usually malleable and ductile
(e) The starting substances in a reaction are called the products.
•False - the end substances in a reaction are called the products
Decide if the sentence is true or false. If the sentence is false,
rewrite it to make it correct.
(a) Physical changes result in the formation of new substances.
•False - chemical changes result in a new substance
(b) A chemical property of salt is that it forms white crystals in the
shape of a cube.
•False - a physical property of salt is that it forms white crystals
in the shape of a cube
(c) The formation of dew is a physical change.
•True
(d) Non-metals are usually malleable and ductile.
•False - metals are usually malleable and ductile
(e) The starting substances in a reaction are called the products.
•False - the end substances in a reaction are called the products
(f) To determine the density of a sample of material, you must
measure the mass and volume of the sample.
Decide if the sentence is true or false. If the sentence is false,
rewrite it to make it correct.
(a) Physical changes result in the formation of new substances.
•False - chemical changes result in a new substance
(b) A chemical property of salt is that it forms white crystals in the
shape of a cube.
•False - a physical property of salt is that it forms white crystals
in the shape of a cube
(c) The formation of dew is a physical change.
•True
(d) Non-metals are usually malleable and ductile.
•False - metals are usually malleable and ductile
(e) The starting substances in a reaction are called the products.
•False - the end substances in a reaction are called the products
(f) To determine the density of a sample of material, you must
measure the mass and volume of the sample.
•False - to determine the density of a substance you must divide
the mass of a substance by its volume
Label each of the following properties as physical or
chemical.
(a) Copper sulphate crystals are blue
Label each of the following properties as physical or
chemical.
(a) Copper sulphate crystals are blue.
physical
Label each of the following properties as physical or
chemical.
(a) Copper sulphate crystals are blue.
physical
(b) Gold is an excellent conductor of electricity.
Label each of the following properties as physical or
chemical.
(a) Copper sulphate crystals are blue.
physical
(b) Gold is an excellent conductor of electricity.
physical
Label each of the following properties as physical or
chemical.
(a) Copper sulphate crystals are blue.
physical
(b) Gold is an excellent conductor of electricity.
physical
(c) Iron rusts when exposed to air and water
Label each of the following properties as physical or
chemical.
(a) Copper sulphate crystals are blue.
physical
(b) Gold is an excellent conductor of electricity.
physical
(c) Iron rusts when exposed to air and water.
chemical
Label each of the following properties as physical or
chemical.
(a) Copper sulphate crystals are blue.
physical
(b) Gold is an excellent conductor of electricity.
physical
(c) Iron rusts when exposed to air and water.
chemical
(d) Salt is soluble in water.
Label each of the following properties as physical or
chemical.
(a) Copper sulphate crystals are blue.
physical
(b) Gold is an excellent conductor of electricity.
physical
(c) Iron rusts when exposed to air and water.
chemical
(d) Salt is soluble in water.
physical
Label each of the following properties as physical or
chemical.
(a) Copper sulphate crystals are blue.
physical
(b) Gold is an excellent conductor of electricity.
physical
(c) Iron rusts when exposed to air and water.
chemical
(d) Salt is soluble in water.
physical
(e) Calcium reacts with water to produce hydrogen
Label each of the following properties as physical or
chemical.
(a) Copper sulphate crystals are blue.
physical
(b) Gold is an excellent conductor of electricity.
physical
(c) Iron rusts when exposed to air and water.
chemical
(d) Salt is soluble in water.
physical
(e) Calcium reacts with water to produce hydrogen.
chemical
Label each of the following properties as physical or
chemical.
(a) Copper sulphate crystals are blue.
physical
(b) Gold is an excellent conductor of electricity.
physical
(c) Iron rusts when exposed to air and water.
chemical
(d) Salt is soluble in water.
physical
(e) Calcium reacts with water to produce hydrogen.
chemical
(f) Gasoline burns in an automobile engine
Label each of the following properties as physical or
chemical.
(a) Copper sulphate crystals are blue.
physical
(b) Gold is an excellent conductor of electricity.
physical
(c) Iron rusts when exposed to air and water.
chemical
(d) Salt is soluble in water.
physical
(e) Calcium reacts with water to produce hydrogen.
chemical
(f) Gasoline burns in an automobile engine.
chemical
The density of aluminum is 2.7 g/cm3. Four
students each measured the mass and volume
of a sample of metal; their results are shown
below. Only one of the students actually had a
sample of aluminum; the other students had
different materials. From the information
given, decide which student had the aluminum.
(a) mass = 28.4 g volume = 76.7 cm3
(b) mass = 37.4 g volume = 15.1 cm3
(c) mass = 88.3 g volume = 30.2 cm3
(d) mass = 76.7 g volume = 28.4 cm3
The density of aluminum is 2.7 g/cm3. Four
students each measured the mass and volume
of a sample of metal; their results are shown
below. Only one of the students actually had a
sample of aluminum; the other students had
different materials. From the information
given, decide which student had the aluminum.
(a) mass = 28.4 g volume = 76.7 cm3
(b) mass = 37.4 g volume = 15.1 cm3
(c) mass = 88.3 g volume = 30.2 cm3
(d) mass = 76.7 g volume = 28.4 cm3
The density of silver is 10.5 g/cm3.
If you had a piece of silver with a
mass of 458 g, what would the volume
of the piece of silver be?
(a) 0.022 cm3
(b) 43.6 cm3
(c) 447.5 cm3
(d) 468.5 cm3
The density of silver is 10.5 g/cm3.
If you had a piece of silver with a
mass of 458 g, what would the volume
of the piece of silver be?
(a) 0.022 cm3
(b) 43.6 cm3
(c) 447.5 cm3
(d) 468.5 cm3
Which of the following lists of properties
is characteristic of metals?
(a) Shiny, brittle, conduct heat and
electricity.
(b) Shiny, malleable, conduct heat and
electricity.
(c) Shiny, malleable, do not conduct heat
and electricity.
(d) Shiny, malleable, conduct heat but
not electricity.
Which of the following lists of properties
is characteristic of metals?
(a) Shiny, brittle, conduct heat and
electricity.
(b) Shiny, malleable, conduct heat and
electricity.
(c) Shiny, malleable, do not conduct heat
and electricity.
(d) Shiny, malleable, conduct heat but
not electricity.
State whether each of the following changes is a physical change or
a chemical change. Give a reason for your answer in each case.
(a) The snow on the sidewalk outside your house melts.
State whether each of the following changes is a physical change or
a chemical change. Give a reason for your answer in each case.
(a) The snow on the sidewalk outside your house melts.
•physical - change in state
State whether each of the following changes is a physical change or
a chemical change. Give a reason for your answer in each case.
(a) The snow on the sidewalk outside your house melts.
•physical - change in state
(b) A piece of silverware gradually tarnishes when left exposed to
air.
State whether each of the following changes is a physical change or
a chemical change. Give a reason for your answer in each case.
(a) The snow on the sidewalk outside your house melts.
•physical - change in state
(b) A piece of silverware gradually tarnishes when left exposed to
air.
•chemical - new colour formed
State whether each of the following changes is a physical change or
a chemical change. Give a reason for your answer in each case.
(a) The snow on the sidewalk outside your house melts.
•physical - change in state
(b) A piece of silverware gradually tarnishes when left exposed to
air.
•chemical - new colour formed
(c) Milk turns sour after several days.
State whether each of the following changes is a physical change or
a chemical change. Give a reason for your answer in each case.
(a) The snow on the sidewalk outside your house melts.
•physical - change in state
(b) A piece of silverware gradually tarnishes when left exposed to
air.
•chemical - new colour formed
(c) Milk turns sour after several days.
•chemical - new odour/taste produced therefore new substance
made
State whether each of the following changes is a physical change or
a chemical change. Give a reason for your answer in each case.
(a) The snow on the sidewalk outside your house melts.
•physical - change in state
(b) A piece of silverware gradually tarnishes when left exposed to
air.
•chemical - new colour formed
(c) Milk turns sour after several days.
•chemical - new odour/taste produced therefore new substance
made
(d) The three sugar cubes that you add to your coffee disappear
when you stir the coffee.
State whether each of the following changes is a physical change or
a chemical change. Give a reason for your answer in each case.
(a) The snow on the sidewalk outside your house melts.
•physical - change in state
(b) A piece of silverware gradually tarnishes when left exposed to
air.
•chemical - new colour formed
(c) Milk turns sour after several days.
•chemical - new odour/taste produced therefore new substance
made
(d) The three sugar cubes that you add to your coffee disappear
when you stir the coffee.
•physical - cubes dissolve in coffee (can still taste the sugar)
State whether each of the following changes is a physical change or
a chemical change. Give a reason for your answer in each case.
(a) The snow on the sidewalk outside your house melts.
•physical - change in state
(b) A piece of silverware gradually tarnishes when left exposed to
air.
•chemical - new colour formed
(c) Milk turns sour after several days.
•chemical - new odour/taste produced therefore new substance
made
(d) The three sugar cubes that you add to your coffee disappear
when you stir the coffee.
•physical - cubes dissolve in coffee (can still taste the sugar)
(e) You accidentally spill some bleach on your favourite blue shirt
and end up with white stains on the shirt.
State whether each of the following changes is a physical change or
a chemical change. Give a reason for your answer in each case.
(a) The snow on the sidewalk outside your house melts.
•physical - change in state
(b) A piece of silverware gradually tarnishes when left exposed to
air.
•chemical - new colour formed
(c) Milk turns sour after several days.
•chemical - new odour/taste produced therefore new substance
made
(d) The three sugar cubes that you add to your coffee disappear
when you stir the coffee.
•physical - cubes dissolve in coffee (can still taste the sugar)
(e) You accidentally spill some bleach on your favourite blue shirt
and end up with white stains on the shirt.
•chemical - new colour produced
State whether each of the following changes is a physical change or
a chemical change. Give a reason for your answer in each case.
(a) The snow on the sidewalk outside your house melts.
•physical - change in state
(b) A piece of silverware gradually tarnishes when left exposed to
air.
•chemical - new colour formed
(c) Milk turns sour after several days.
•chemical - new odour/taste produced therefore new substance
made
(d) The three sugar cubes that you add to your coffee disappear
when you stir the coffee.
•physical - cubes dissolve in coffee (can still taste the sugar)
(e) You accidentally spill some bleach on your favourite blue shirt
and end up with white stains on the shirt.
•chemical - new colour produced
(f) To reconnect a loose wire in your computer, the technician
melts some solder.
State whether each of the following changes is a physical change or
a chemical change. Give a reason for your answer in each case.
(a) The snow on the sidewalk outside your house melts.
•physical - change in state
(b) A piece of silverware gradually tarnishes when left exposed to
air.
•chemical - new colour formed
(c) Milk turns sour after several days.
•chemical - new odour/taste produced therefore new substance
made
(d) The three sugar cubes that you add to your coffee disappear
when you stir the coffee.
•physical - cubes dissolve in coffee (can still taste the sugar)
(e) You accidentally spill some bleach on your favourite blue shirt
and end up with white stains on the shirt.
•chemical - new colour produced
(f) To reconnect a loose wire in your computer, the technician
melts some solder.
•physical - solder changes state
When electricity is passed through water, a
chemical reaction takes place. In this reaction
(a) the products are nitrogen and oxygen.
(b) the products are carbon dioxide and
oxygen.
(c) the products are water and hydrogen
peroxide.
(d) the products are hydrogen and oxygen.
When electricity is passed through water, a
chemical reaction takes place. In this reaction
(a) the products are nitrogen and oxygen.
(b) the products are carbon dioxide and
oxygen.
(c) the products are water and hydrogen
peroxide.
(d) the products are hydrogen and oxygen.
Only one of the following lists
does not consist entirely of
symbols for elements. Which one?
(a) C, He, Mg, Cu
(b) H, ASA, P, Fe
(c) He, N, Cl, O
(d) Ca, Ne, Fe, He
Only one of the following lists
does not consist entirely of
symbols for elements. Which one?
(a) C, He, Mg, Cu
(b) H, ASA, P, Fe
(c) He, N, Cl, O
(d) Ca, Ne, Fe, He
The total number of atoms
represented by the formula K2Cr2O7
is
(a) 1
(b) 3
(c) 11
(d) 28
The total number of atoms
represented by the formula K2Cr2O7
is
(a) 1
(b) 3
(c) 11
(d) 28
Write symbols for the following elements that are
found in living things.
Oxygen
Carbon
Hydrogen
Nitrogen
Phosphorus
Sulphur
Chlorine
Sodium
Potassium
Magnesium
Iodine
Calcium
Iron
Write symbols for the following elements that are
found in living things.
Oxygen - O
Carbon
Hydrogen
Nitrogen
Phosphorus
Sulphur
Chlorine
Sodium
Potassium
Magnesium
Iodine
Calcium
Iron
Write symbols for the following elements that are
found in living things.
Oxygen - O
Carbon - C
Hydrogen
Nitrogen
Phosphorus
Sulphur
Chlorine
Sodium
Potassium
Magnesium
Iodine
Calcium
Iron
Write symbols for the following elements that are
found in living things.
Oxygen - O
Carbon - C
Hydrogen - H
Nitrogen
Phosphorus
Sulphur
Chlorine
Sodium
Potassium
Magnesium
Iodine
Calcium
Iron
Write symbols for the following elements that are
found in living things.
Oxygen - O
Carbon - C
Hydrogen - H
Nitrogen - N
Phosphorus
Sulphur
Chlorine
Sodium
Potassium
Magnesium
Iodine
Calcium
Iron
Write symbols for the following elements that are
found in living things.
Oxygen - O
Carbon - C
Hydrogen - H
Nitrogen - N
Phosphorus - P
Sulphur
Chlorine
Sodium
Potassium
Magnesium
Iodine
Calcium
Iron
Write symbols for the following elements that are
found in living things.
Oxygen - O
Carbon - C
Hydrogen - H
Nitrogen - N
Phosphorus - P
Sulphur - S
Chlorine
Sodium
Potassium
Magnesium
Iodine
Calcium
Iron
Write symbols for the following elements that are
found in living things.
Oxygen - O
Carbon - C
Hydrogen - H
Nitrogen - N
Phosphorus - P
Sulphur - S
Chlorine - Cl
Sodium
Potassium
Magnesium
Iodine
Calcium
Iron
Write symbols for the following elements that are
found in living things.
Oxygen - O
Carbon - C
Hydrogen - H
Nitrogen - N
Phosphorus - P
Sulphur - S
Chlorine - Cl
Sodium - Na
Potassium
Magnesium
Iodine
Calcium
Iron
Write symbols for the following elements that are
found in living things.
Oxygen - O
Carbon - C
Hydrogen - H
Nitrogen - N
Phosphorus - P
Sulphur - S
Chlorine - Cl
Sodium - Na
Potassium - K
Magnesium
Iodine
Calcium
Iron
Write symbols for the following elements that are
found in living things.
Oxygen - O
Carbon - C
Hydrogen - H
Nitrogen - N
Phosphorus - P
Sulphur - S
Chlorine - Cl
Sodium - Na
Potassium - K
Magnesium - Mg
Iodine
Calcium
Iron
Write symbols for the following elements that are
found in living things.
Oxygen - O
Carbon - C
Hydrogen - H
Nitrogen - N
Phosphorus - P
Sulphur - S
Chlorine - Cl
Sodium - Na
Potassium - K
Magnesium - Mg
Iodine - I
Calcium
Iron
Write symbols for the following elements that are
found in living things.
Oxygen - O
Carbon - C
Hydrogen - H
Nitrogen - N
Phosphorus - P
Sulphur - S
Chlorine - Cl
Sodium - Na
Potassium - K
Magnesium - Mg
Iodine - I
Calcium - Ca
Iron
Write symbols for the following elements that are
found in living things.
Oxygen - O
Carbon - C
Hydrogen - H
Nitrogen - N
Phosphorus - P
Sulphur - S
Chlorine - Cl
Sodium - Na
Potassium - K
Magnesium - Mg
Iodine - I
Calcium - Ca
Iron - Fe
Protons are
(a) positively charged particles found
outside the nucleus in an atom.
(b) negatively charged particles found
outside the nucleus in an atom.
(c) neutral particles found in the nucleus
in an atom.
(d) positively charged particles found in
the nucleus in an atom.
Protons are
(a) positively charged particles found
outside the nucleus in an atom.
(b) negatively charged particles found
outside the nucleus in an atom.
(c) neutral particles found in the nucleus
in an atom.
(d) positively charged particles found
in the nucleus in an atom.
Electrons are
(a) positively charged particles found
outside the nucleus in an atom.
(b) negatively charged particles found
outside the nucleus in an atom.
(c) neutral particles found in the nucleus
in an atom.
(d) negatively charged particles found in
the nucleus in an atom.
Electrons are
(a) positively charged particles found
outside the nucleus in an atom.
(b) negatively charged particles found
outside the nucleus in an atom.
(c) neutral particles found in the nucleus
in an atom.
(d) negatively charged particles found in
the nucleus in an atom.
Neutrons are
(a) negatively charged particles
found outside the nucleus in an atom.
(b) neutral particles found outside
the nucleus in an atom.
(c) neutral particles found in the
nucleus in an atom.
(d) positively charged particles
found in the nucleus in an atom.
Neutrons are
(a) negatively charged particles
found outside the nucleus in an atom.
(b) neutral particles found outside
the nucleus in an atom.
(c) neutral particles found in the
nucleus in an atom.
(d) positively charged particles
found in the nucleus in an atom.
In Bohr's planetary model of the atom,
he suggested that
(a) electrons could be found only in
certain orbits or energy levels.
(b) the closer an electron is to the
nucleus, the higher its energy.
(c) electrons always stay in the same
energy level.
(d) the orbit closest to the nucleus can
hold eight electrons.
In Bohr's planetary model of the atom,
he suggested that
(a) electrons could be found only in
certain orbits or energy levels.
(b) the closer an electron is to the
nucleus, the higher its energy.
(c) electrons always stay in the same
energy level.
(d) the orbit closest to the nucleus can
hold eight electrons.
In which group of the periodic
table are the halogens found?
(a) 1
(b) 2
(c) 7
(d) 8
In which group of the periodic
table are the halogens found?
(a) 1
(b) 2
(c) 7
(d) 8
In which group of the
periodic table are the alkali
metals found?
(a) 1
(b) 2
(c) 7
(d) 8
In which group of the
periodic table are the alkali
metals found?
(a) 1
(b) 2
(c) 7
(d) 8
Which group in the periodic
table contains the noble
gases?
(a) 1
(b) 2
(c) 7
(d) 8
Which group in the periodic
table contains the noble
gases?
(a) 1
(b) 2
(c) 7
(d) 8
The most metallic elements in the
periodic table are found:
(a) on the extreme right of the
table
(b) on the extreme left of the
table
(c) in the middle of the table
(d) in the second column
The most metallic elements in the
periodic table are found:
(a) on the extreme right of the
table
(b) on the extreme left of the
table
(c) in the middle of the table
(d) in the second column
Rows in the periodic table
are also referred to as
(a) periods.
(b) families.
(c) groups.
(d) columns.
Rows in the periodic table
are also referred to as
(a) periods.
(b) families.
(c) groups.
(d) columns.
Draw Bohr-Rutherford diagrams for the following
elements:
Be
(AN = 4, MN = 9.01)
Si (AN = 14, MN = 28.0)
Ar (AN, 18, MN = 39.9)
Draw Bohr-Rutherford diagrams for the following
elements:
Be (AN = 4, MN = 9.01)
P = 4, e = 4, n = 5
Draw Bohr-Rutherford diagrams for the following
elements:
Si (AN = 14, MN = 28.0)
P = 14, e = 14, n = 14
Draw Bohr-Rutherford diagrams for the following
elements:
Ar (AN, 18, MN = 39.9)
P = 18, e = 18, n = 22
Draw Lewis Dot Diagrams for the following elements:
Mg
Al
Br
Draw Lewis Dot Diagrams for the following elements:
Mg
Draw Lewis Dot Diagrams for the following elements:
Al
Draw Lewis Dot Diagrams for the following elements:
Al
Explain why Canadians enjoy earlier
sunrises in July than in January.
Write your answer in complete
sentences.
Explain why Canadians enjoy earlier
sunrises in July than in January.
Write your answer in complete
sentences.
•The days are longer due to the
fact that we get more direct
sunlight in the summer.
•Because the days are longer the
Sun rises earlier and sets later
The year is based on ...
(a) the Earth's rotation
(b) the Earth's revolution
(c) the Moon's revolution
(d) the Sun's rotation
The year is based on ...
(a) the Earth's rotation
(b) the Earth's revolution
(c) the Moon's revolution
(d) the Sun's rotation
Prepare a diagram that
explains the factors
responsible for our seasons.
Prepare a diagram that
explains the factors
responsible for our seasons.
Choose the planet that is
completely different from
the other three.
(a) Jupiter
(b) Neptune
(c) Mars
(d) Saturn
Choose the planet that is
completely different from
the other three.
(a) Jupiter
(b) Neptune
(c) Mars
(d) Saturn
Arrange the following planets
in order of size from smallest
to largest: Jupiter, Earth,
Mars, Neptune.
Arrange the following planets
in order of size from smallest
to largest: Jupiter, Earth,
Mars, Neptune.
•Mars, Earth, Neptune,
Jupiter
From the list given, choose
the planet that has rings
around it.
(a) Pluto
(b) Mercury
(c) Mars
(d) Jupiter
From the list given, choose
the planet that has rings
around it.
(a) Pluto
(b) Mercury
(c) Mars
(d) Jupiter
Which of the following statements describes a
galaxy?
(a) A galaxy consists of our Sun and all major
planets.
(b) A galaxy consists of our entire solar
system and all the stars we can see.
(c) A galaxy consists of about 200 billion
stars, dust, gas, and solid matter that may
form planets.
(d) A galaxy consists of all the matter in the
universe.
Which of the following statements describes a
galaxy?
(a) A galaxy consists of our Sun and all major
planets.
(b) A galaxy consists of our entire solar
system and all the stars we can see.
(c) A galaxy consists of about 200 billion
stars, dust, gas, and solid matter that may
form planets.
(d) A galaxy consists of all the matter in the
universe.
What object is most likely
the birthplace of stars?
(a) Black hole.
(b) Supernova.
(c) Nebula.
(d) Neutron star.
What object is most likely
the birthplace of stars?
(a) Black hole.
(b) Supernova.
(c) Nebula.
(d) Neutron star.
Write a paragraph explaining how a cloud of dust and gas can eventually form a
star. Include diagrams in your answer.
Write a paragraph explaining how a cloud of dust and gas can eventually form a
star. Include diagrams in your answer.
•spaces between stars is filled with gas and dust
Write a paragraph explaining how a cloud of dust and gas can eventually form a
star. Include diagrams in your answer.
•spaces between stars is filled with gas and dust
•a dense area is called a Nebula mostly Hydrogen
Write a paragraph explaining how a cloud of dust and gas can eventually form a
star. Include diagrams in your answer.
•spaces between stars is filled with gas and dust
•a dense area is called a Nebula mostly Hydrogen
•gravity pulls everything together and the gas and dust collapse everything is
pulled towards the middle
Write a paragraph explaining how a cloud of dust and gas can eventually form a
star. Include diagrams in your answer.
•spaces between stars is filled with gas and dust
•a dense area is called a Nebula mostly Hydrogen
•gravity pulls everything together and the gas and dust collapse everything is
pulled towards the middle
•the cloud spins faster and faster
Write a paragraph explaining how a cloud of dust and gas can eventually form a
star. Include diagrams in your answer.
•spaces between stars is filled with gas and dust
•a dense area is called a Nebula mostly Hydrogen
•gravity pulls everything together and the gas and dust collapse everything is
pulled towards the middle
•the cloud spins faster and faster
•more hydrogen builds up in the center same idea as a figure skater drawing
their arms inwards as they spin
Write a paragraph explaining how a cloud of dust and gas can eventually form a
star. Include diagrams in your answer.
•spaces between stars is filled with gas and dust
•a dense area is called a Nebula mostly Hydrogen
•gravity pulls everything together and the gas and dust collapse everything is
pulled towards the middle
•the cloud spins faster and faster
•more hydrogen builds up in the center same idea as a figure skater drawing
their arms inwards as they spin
•the large build up of gas in the center will become the star cloud flattens into
a disk due to the spinning
Write a paragraph explaining how a cloud of dust and gas can eventually form a
star. Include diagrams in your answer.
•spaces between stars is filled with gas and dust
•a dense area is called a Nebula mostly Hydrogen
•gravity pulls everything together and the gas and dust collapse everything is
pulled towards the middle
•the cloud spins faster and faster
•more hydrogen builds up in the center same idea as a figure skater drawing
their arms inwards as they spin
•the large build up of gas in the center will become the star cloud flattens into
a disk due to the spinning
•little pockets of gas accumulate and spin in the same direction as the cloud
(will form planets) as the gases in the center compress the temperature rises
to 10 000 000 oC and the star will ignite
Write a paragraph explaining how a cloud of dust and gas can eventually form a
star. Include diagrams in your answer.
•spaces between stars is filled with gas and dust
•a dense area is called a Nebula mostly Hydrogen
•gravity pulls everything together and the gas and dust collapse everything is
pulled towards the middle
•the cloud spins faster and faster
•more hydrogen builds up in the center same idea as a figure skater drawing
their arms inwards as they spin
•the large build up of gas in the center will become the star cloud flattens into
a disk due to the spinning
•little pockets of gas accumulate and spin in the same direction as the cloud
(will form planets) as the gases in the center compress the temperature rises
to 10 000 000 oC and the star will ignite
•solar winds from the new star blow away most of the hydrogen and helium
from the inner regions leaving chunks of heavy matter
Write a paragraph explaining how a cloud of dust and gas can eventually form a
star. Include diagrams in your answer.
•spaces between stars is filled with gas and dust
•a dense area is called a Nebula mostly Hydrogen
•gravity pulls everything together and the gas and dust collapse everything is
pulled towards the middle
•the cloud spins faster and faster
•more hydrogen builds up in the center same idea as a figure skater drawing
their arms inwards as they spin
•the large build up of gas in the center will become the star cloud flattens into
a disk due to the spinning
•little pockets of gas accumulate and spin in the same direction as the cloud
(will form planets) as the gases in the center compress the temperature rises
to 10 000 000 oC and the star will ignite
•solar winds from the new star blow away most of the hydrogen and helium
from the inner regions leaving chunks of heavy matter
•these chunks keep colliding with each other and grow in size to become
planetismals and eventually the inner planets
Write a paragraph explaining how a cloud of dust and gas can eventually form a
star. Include diagrams in your answer.
•spaces between stars is filled with gas and dust
•a dense area is called a Nebula mostly Hydrogen
•gravity pulls everything together and the gas and dust collapse everything is
pulled towards the middle
•the cloud spins faster and faster
•more hydrogen builds up in the center same idea as a figure skater drawing
their arms inwards as they spin
•the large build up of gas in the center will become the star cloud flattens into
a disk due to the spinning
•little pockets of gas accumulate and spin in the same direction as the cloud
(will form planets) as the gases in the center compress the temperature rises
to 10 000 000 oC and the star will ignite
•solar winds from the new star blow away most of the hydrogen and helium
from the inner regions leaving chunks of heavy matter
•these chunks keep colliding with each other and grow in size to become
planetismals and eventually the inner planets
• lighter more volatile elements (Hydrogen, Helium) are distributed in the outer
regions forming the outer planets remaining matter makes up asteroids,
meteors and comets
What are the two most common elements found on
the Sun?
What role do they play in the energy-production
mechanism of the Sun?
What are the two most common elements found on
the Sun?
• hydrogen and helium
What role do they play in the energy-production
mechanism of the Sun?
What are the two most common elements found on
the Sun?
• hydrogen and helium
What role do they play in the energy-production
mechanism of the Sun?
•In the center of the Sun, hydrogen is being
converted to helium by the process of fusion.
•This is the energy production process of our star.
The colour of a star depends on its
(a) temperature.
(b) size.
(c) distance.
(d) position.
The colour of a star depends on its
(a) temperature.
(b) size.
(c) distance.
(d) position.
Which of the following is a biotic
factor?
(a) temperature
(b) sunlight
(c) energy
(d) decomposers
Which of the following is a biotic
factor?
(a) temperature
(b) sunlight
(c) energy
(d) decomposers
Which of the following is NOT
recycled in an ecosystem?
(a) water
(b) energy
(c) carbon
(d) nitrogen
Which of the following is NOT
recycled in an ecosystem?
(a) water
(b) energy
(c) carbon
(d) nitrogen
What is the maximum number of
individuals that can live in an area
without harming the environment?
(a) carrying capacity
(b) steady state
(c) climax community
(d) population density
What is the maximum number of
individuals that can live in an area
without harming the environment?
(a) carrying capacity
(b) steady state
(c) climax community
(d) population density
Which of the following organisms
would be most affected by
bio-magnification?
(a) frog
(b) hawk
(c) snake
(d) grasshopper
Which of the following organisms
would be most affected by
bio-magnification?
(a) frog
(b) hawk
(c) snake
(d) grasshopper
Consider the following food web:
shark
killer whale
kingfisher
sealion
codfish
shrimp
salmon
minnows
plankton
(a) List the organisms in the second tropic level.
Consider the following food web:
shark
killer whale
kingfisher
sealion
codfish
shrimp
salmon
minnows
plankton
(a) List the organisms in the second tropic level.
shrimp, minnow
Consider the following food web:
shark
killer whale
kingfisher
sealion
codfish
shrimp
salmon
minnows
plankton
(b) List two things that are missing which are a key part of
any food web.
Consider the following food web:
shark
killer whale
kingfisher
sealion
codfish
shrimp
salmon
minnows
plankton
(b) List two things that are missing which are a key part of
any food web.
the Sun, decomposers
Consider the following food web:
shark
killer whale
kingfisher
sealion
codfish
shrimp
salmon
minnows
plankton
(c) What would happen to the sea lion population if all of the
kingfishers were removed?
Consider the following food web:
shark
killer whale
kingfisher
sealion
codfish
shrimp
salmon
minnows
plankton
(c) What would happen to the sea lion population if all of the
kingfishers were removed?
The population of sealions would increase because more
food (codfish) would be available
Consider the following food web:
shark
killer whale
kingfisher
sealion
codfish
shrimp
salmon
minnows
plankton
(d) Name the trophic level and consumer order of the killer
whale.
Consider the following food web:
shark
killer whale
kingfisher
sealion
codfish
shrimp
salmon
minnows
plankton
(d) Name the trophic level and consumer order of the killer
whale.
5th Trophic level
Top carnivore or 4th order consumer
Consider the following food web:
shark
killer whale
kingfisher
sealion
codfish
shrimp
salmon
minnows
plankton
(e) What organism would you expect to be most affected by a
chemical pesticide found in the ocean?
Consider the following food web:
shark
killer whale
kingfisher
sealion
codfish
shrimp
salmon
minnows
plankton
(e) What organism would you expect to be most affected by a
chemical pesticide found in the ocean?
Killer Whale
What is an invasive species?
Why are invasive species potentially harmful?
What is an invasive species?
•
A species that can take over the habitat a
native species or invade their bodies.
Why are invasive species potentially harmful?
What is an invasive species?
•
A species that can take over the habitat a
native species or invade their bodies.
Why are invasive species potentially harmful?
•
They upset the equilibrium of an ecosystem
causing problems for the native species.
Match each of the following terms with the proper description.
Match
Description
Term
Eats only plants
(A) omnivore
Eats only animals
(B) decomposer
Bacteria or fungi
(C) carnivore
Eats both plants and animals
(D) herbivore
Part of Earth where all life exists
(E) hydrosphere
Part of Earth covered by water
(F) biosphere
Match each of the following terms with the proper description.
Match
D
Description
Term
Eats only plants
(A) omnivore
Eats only animals
(B) decomposer
Bacteria or fungi
(C) carnivore
Eats both plants and animals
(D) herbivore
Part of Earth where all life exists
(E) hydrosphere
Part of Earth covered by water
(F) biosphere
Match each of the following terms with the proper description.
Match
Description
Term
D
Eats only plants
(A) omnivore
C
Eats only animals
(B) decomposer
Bacteria or fungi
(C) carnivore
Eats both plants and animals
(D) herbivore
Part of Earth where all life exists
(E) hydrosphere
Part of Earth covered by water
(F) biosphere
Match each of the following terms with the proper description.
Match
Description
Term
D
Eats only plants
(A) omnivore
C
Eats only animals
(B) decomposer
B
Bacteria or fungi
(C) carnivore
Eats both plants and animals
(D) herbivore
Part of Earth where all life exists
(E) hydrosphere
Part of Earth covered by water
(F) biosphere
Match each of the following terms with the proper description.
Match
Description
Term
D
Eats only plants
(A) omnivore
C
Eats only animals
(B) decomposer
B
Bacteria or fungi
(C) carnivore
A
Eats both plants and animals
(D) herbivore
Part of Earth where all life exists
(E) hydrosphere
Part of Earth covered by water
(F) biosphere
Match each of the following terms with the proper description.
Match
Description
Term
D
Eats only plants
(A) omnivore
C
Eats only animals
(B) decomposer
B
Bacteria or fungi
(C) carnivore
A
Eats both plants and animals
(D) herbivore
F
Part of Earth where all life exists
(E) hydrosphere
Part of Earth covered by water
(F) biosphere
Match each of the following terms with the proper description.
Match
Description
Term
D
Eats only plants
(A) omnivore
C
Eats only animals
(B) decomposer
B
Bacteria or fungi
(C) carnivore
A
Eats both plants and animals
(D) herbivore
F
Part of Earth where all life exists
(E) hydrosphere
E
Part of Earth covered by water
(F) biosphere
(a) How is carbon dioxide removed from the
atmosphere?
(b) How is carbon dioxide put into the atmosphere?
(a) How is carbon dioxide removed from the
atmosphere?
•
Carbon dioxide is removed through the process
of photosynthesis
(b) How is carbon dioxide put into the atmosphere?
(a) How is carbon dioxide removed from the
atmosphere?
•
Carbon dioxide is removed through the process
of photosynthesis
(b) How is carbon dioxide put into the atmosphere?
•
•
Carbon dioxide is put into the atmosphere
through cellular respiration
burning fossil fuels
(a) Why are increasing levels of carbon dioxide a
concern?
(b) What practical things can you do to reduce carbon
dioxide emissions? (No, you can’t stop breathing!)
(a) Why are increasing levels of carbon dioxide a
concern?
• Carbon dioxide is a greenhouse gas
• The build up of carbon dioxide will prevent heat
from leaving the atmosphere
(b) What practical things can you do to reduce carbon
dioxide emissions? (No, you can’t stop breathing!)
(a) Why are increasing levels of carbon dioxide a
concern?
• Carbon dioxide is a greenhouse gas
• The build up of carbon dioxide will prevent heat
from leaving the atmosphere
(b) What practical things can you do to reduce carbon
dioxide emissions? (No, you can’t stop breathing!)
• reduce burning of fossil fuels
(clean transportation methods)
•
recycle
•
plant some trees
What is the term for using natural resources wisely
so that they may be used forever?
What is the term for using natural resources wisely
so that they may be used forever?
• Sustainability of resources
Describe two (2) benefits of eating locally and eating
fewer processed foods.
Describe two (2) benefits of eating locally and eating
fewer processed foods.
• less cost for transportation
• less cost to produce and package the food
• less chemicals to preserve the food
Which of the following is a
density-dependent factor that may
affect a population?
(a) forest fire
(b) flood
(c) disease
(d) tornado
Which of the following is a
density-dependent factor that may
affect a population?
(a) forest fire
(b) flood
(c) disease
(d) tornado
Where is most of the Earth’s carbon
stored?
(a) ocean
(b) forests
(c) fossil fuels
(d) atmosphere
Where is most of the Earth’s carbon
stored?
(a) ocean
(b) forests
(c) fossil fuels
(d) atmosphere
Which of the following is best evidence
that the carrying capacity of an area has
been reached?
(a) population stabilizes or decreases
(b) population grows gradually
(c) there are plenty of natural resources
(d) the population increases rapidly
Which of the following is best evidence
that the carrying capacity of an area has
been reached?
(a) population stabilizes or decreases
(b) population grows gradually
(c) there are plenty of natural resources
(d) the population increases rapidly
Most of the time in an ecosystem there
are more…
(a) predators than prey
(b) prey than predators
(c) omnivores than herbivores
(d) prey than decomposers
Most of the time in an ecosystem there
are more…
(a) predators than prey
(b) prey than predators
(c) omnivores than herbivores
(d) prey than decomposers
Which of the following is true about
plants? Plants…
(a) use oxygen to make sugar
(b) use carbon dioxide to make sugar
(c) never produce carbon dioxide
(d) cause global warming
Which of the following is true about
plants? Plants…
(a) use oxygen to make sugar
(b) use carbon dioxide to make sugar
(c) never produce carbon dioxide
(d) cause global warming
What term is given to a vulture that eats
from the remains of a dead animal?
(a) scavenger
(b) parasite
(c) carnivore
(d) decomposer
What term is given to a vulture that eats
from the remains of a dead animal?
(a) scavenger
(b) parasite
(c) carnivore
(d) decomposer
Consider the population numbers of
Minnows and Oscar fish in a pond at
Laurel Creek.
year
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
# Minnows
35
42
55
60
52
37
20
14
20
28
35
45
50
46
40
35
# Oscar fish
20
22
28
38
46
52
55
45
30
20
16
25
32
38
35
20
Using proper graphing technique, graph the populations of
these creatures on the provided paper.
Use a different colour for each population (include a legend)
and include an appropriate title for your graph.
Using proper graphing technique, graph the populations of
these creatures on the provided paper.
Use a different colour for each population (include a legend)
and include an appropriate title for your graph.
Population numbers for Minnows and Oscar fish
70
60
# of animals
50
40
30
20
10
0
1965
1970
1975
1980
1985
year
1990
1995
2000
2005
Series1
Minnows
Series2
Oscar fish
Which creature is the predator? ____________________
What evidence suggests this?
Which creature is the predator? Oscar fish
What evidence suggests this?
Which creature is the predator? Oscar fish
What evidence suggests this?
- their population trend follows that of the minnows
What would you expect to happen to the population of Oscar
fish if the population of minnows went down, and why?
What would you expect to happen to the population of Oscar
fish if the population of minnows went down, and why?
The population of Oscar fish would also decrease because
they feed on the minnows.
Other than the predator-prey relationship, describe 2 factors
that could account for the change in the population of minnows
from 1976 to 1984:
1)
2)
Other than the predator-prey relationship, describe 2 factors
that could account for the change in the population of minnows
from 1976 to 1984:
1) Drought could cause their food supply to decrease
2)
Other than the predator-prey relationship, describe 2 factors
that could account for the change in the population of minnows
from 1976 to 1984:
1) Drought could cause their food supply to decrease
2) Disease could have hits the minnows and decreased their
numbers.
When a plastic comb is rubbed with a
piece of animal fur and is brought
close to a fine stream of water
from a tap, the stream of water will
be
(a) attracted to the comb.
(b) repelled by the comb.
(c) unaffected by the comb.
(d) first attracted, then repelled.
When a plastic comb is rubbed with a
piece of animal fur and is brought
close to a fine stream of water
from a tap, the stream of water will
be
(a) attracted to the comb.
(b) repelled by the comb.
(c) unaffected by the comb.
(d) first attracted, then repelled.
Describe what would happen on a dry, cool day
if you were to pet a long-haired cat for several
seconds before reaching out to touch a metal
doorknob. Why does this occur? Write your
answer in complete sentences.
Describe what would happen on a dry, cool day
if you were to pet a long-haired cat for several
seconds before reaching out to touch a metal
doorknob. Why does this occur? Write your
answer in complete sentences.
•while petting the cat an exchange of
electrons occurs
Describe what would happen on a dry, cool day
if you were to pet a long-haired cat for several
seconds before reaching out to touch a metal
doorknob. Why does this occur? Write your
answer in complete sentences.
•while petting the cat an exchange of
electrons occurs
•you become negative and the fur becomes
positive
Describe what would happen on a dry, cool day
if you were to pet a long-haired cat for several
seconds before reaching out to touch a metal
doorknob. Why does this occur? Write your
answer in complete sentences.
•while petting the cat an exchange of
electrons occurs
•you become negative and the fur becomes
positive
•you will build up a charge on your body that
will be discharged if you touch a doorknob
Which of the following is a
good conductor?
(a) silk
(b) sand
(c) salt water
(d) silver
Which of the following is a
good conductor?
(a) silk
(b) sand
(c) salt water
(d) silver
When a negative rod is used to induce a charge
on an object, there is a flow of:
(a)
(b)
(c)
(d)
electrons from the rod into the object.
protons from the rod into the object.
electrons from the object to the ground.
protons from the object to the ground.
When a negative rod is used to induce a charge
on an object, there is a flow of:
(a) electrons from the rod into the object.
(b) protons from the rod into the object.
(c) electrons from the object to the
ground.
(d) protons from the object to the ground.
You and a friend are standing in the middle of a football field
as low-lying clouds begin to roll quickly into the area. You
notice that your friend's hair suddenly begins to stand up. You
feel that the same thing is happening to you. Even though it
has not yet begun to rain, your friend shouts that you had
better both get out of the area quickly because there will soon
be lightning. Explain why hair standing up could be a
warning sign of a lightning strike. Write your answer in
complete sentences.
You and a friend are standing in the middle of a football field
as low-lying clouds begin to roll quickly into the area. You
notice that your friend's hair suddenly begins to stand up. You
feel that the same thing is happening to you. Even though it
has not yet begun to rain, your friend shouts that you had
better both get out of the area quickly because there will soon
be lightning. Explain why hair standing up could be a
warning sign of a lightning strike. Write your answer in
complete sentences.
•a build up of charge is occurring on the ground
You and a friend are standing in the middle of a football field
as low-lying clouds begin to roll quickly into the area. You
notice that your friend's hair suddenly begins to stand up. You
feel that the same thing is happening to you. Even though it
has not yet begun to rain, your friend shouts that you had
better both get out of the area quickly because there will soon
be lightning. Explain why hair standing up could be a
warning sign of a lightning strike. Write your answer in
complete sentences.
•a build up of charge is occurring on the ground
•your hair starts to stand up because you are getting
charged
You and a friend are standing in the middle of a football field
as low-lying clouds begin to roll quickly into the area. You
notice that your friend's hair suddenly begins to stand up. You
feel that the same thing is happening to you. Even though it
has not yet begun to rain, your friend shouts that you had
better both get out of the area quickly because there will soon
be lightning. Explain why hair standing up could be a
warning sign of a lightning strike. Write your answer in
complete sentences.
•a build up of charge is occurring on the ground
•your hair starts to stand up because you are getting
charged
•you should get to a lower place or get out of the area
quickly because a flow of charge is building up
You and a friend are standing in the middle of a football field
as low-lying clouds begin to roll quickly into the area. You
notice that your friend's hair suddenly begins to stand up. You
feel that the same thing is happening to you. Even though it
has not yet begun to rain, your friend shouts that you had
better both get out of the area quickly because there will soon
be lightning. Explain why hair standing up could be a
warning sign of a lightning strike. Write your answer in
complete sentences.
•a build up of charge is occurring on the ground
•your hair starts to stand up because you are getting
charged
•you should get to a lower place or get out of the area
quickly because a flow of charge is building up
•the flow of charge is lightning
Match the electrical symbol in with the appropriate name by
writing the number of the symbol next to its
corresponding name:
_____ fuse
_____ single cell
_____ switch
_____ 3 cells in series
_____ resistor
_____ ammeter
_____ voltmeter
_____ ground
Match the electrical symbol in with the appropriate name by
writing the number of the symbol next to its
corresponding name:
__4__ fuse
_____ single cell
_____ switch
_____ 3 cells in series
_____ resistor
_____ ammeter
_____ voltmeter
_____ ground
Match the electrical symbol in with the appropriate name by
writing the number of the symbol next to its
corresponding name:
__4__ fuse
__8__ single cell
_____ switch
_____ 3 cells in series
_____ resistor
_____ ammeter
_____ voltmeter
_____ ground
Match the electrical symbol in with the appropriate name by
writing the number of the symbol next to its
corresponding name:
__4__ fuse
__8__ single cell
__3__ switch
_____ 3 cells in series
_____ resistor
_____ ammeter
_____ voltmeter
_____ ground
Match the electrical symbol in with the appropriate name by
writing the number of the symbol next to its
corresponding name:
__4__ fuse
__8__ single cell
__3__ switch
__2__ 3 cells in series
_____ resistor
_____ ammeter
_____ voltmeter
_____ ground
Match the electrical symbol in with the appropriate name by
writing the number of the symbol next to its
corresponding name:
__4__ fuse
__8__ single cell
__3__ switch
__2__ 3 cells in series
__9__ resistor
_____ ammeter
_____ voltmeter
_____ ground
Match the electrical symbol in with the appropriate name by
writing the number of the symbol next to its
corresponding name:
__4__ fuse
__8__ single cell
__3__ switch
__2__ 3 cells in series
__9__ resistor
__5__ ammeter
_____ voltmeter
_____ ground
Match the electrical symbol in with the appropriate name by
writing the number of the symbol next to its
corresponding name:
__4__ fuse
__8__ single cell
__3__ switch
__2__ 3 cells in series
__9__ resistor
__5__ ammeter
__1__ voltmeter
_____ ground
Match the electrical symbol in with the appropriate name by
writing the number of the symbol next to its
corresponding name:
__4__ fuse
__8__ single cell
__3__ switch
__2__ 3 cells in series
__9__ resistor
__5__ ammeter
__1__ voltmeter
__7__ ground
When electrons are flowing
through an electric circuit, the
switch that controls the circuit
must be
(a) open.
(b) closed.
(c) off.
(d) ready.
When electrons are flowing
through an electric circuit, the
switch that controls the circuit
must be
(a) open.
(b) closed.
(c) off.
(d) ready.
The unit for measuring
electric potential (potential
difference) is the
(a) ohm.
(b) ampere.
(c) joule.
(d) volt.
The unit for measuring
electric potential (potential
difference) is the
(a) ohm.
(b) ampere.
(c) joule.
(d) volt.
The unit for measuring
electric current is the
(a) ampere.
(b) volt.
(c) coulomb.
(d) ohm.
The unit for measuring
electric current is the
(a) ampere.
(b) volt.
(c) coulomb.
(d) ohm.
Which of the following is
used to measure
current?
(a) Ohmmeter
(b) Ammeter
(c) Electric meter
(d) Voltmeter
Which of the following is
used to measure
current?
(a) Ohmmeter
(b) Ammeter
(c) Electric meter
(d) Voltmeter
The unit for measuring
electrical resistance is
the
(a) ampere.
(b) volt.
(c) coulomb.
(d) ohm.
The unit for measuring
electrical resistance is
the
(a) ampere.
(b) volt.
(c) coulomb.
(d) ohm.
The symbol used for the ohm is
The symbol used for the ohm is
This one!!
What is the voltage drop across a
room air conditioner if it has a
resistance of 16.2 ohms and a
current of 6.8 A flowing through it?
What is the voltage drop across a
room air conditioner if it has a
resistance of 16.2 ohms and a
current of 6.8 A flowing through it?
R = 16. 2 Ω
I = 6.8 A
V
=RxI
= 16.2 Ω x 6.8 A
= 110.16 V
An electric crock-pot connected
to a 120 V outlet has a resistance
of 52 ohms. How much current
does the crock-pot use?
An electric crock-pot connected
to a 120 V outlet has a resistance
of 52 ohms. How much current
does the crock-pot use?
V = 120 V
I =V
R = 52 Ω
R
= 120 V
52 Ω
= 2.3 A
The current required to operate a
coffee maker is 7.5 A. What is its
resistance when connected to a
120 V circuit?
The current required to operate a
coffee maker is 7.5 A. What is its
resistance when connected to a
120 V circuit?
I = 7.5 A
R =V
V = 120 V
I
= 120 V
7.5 A
= 16 Ω
a. Describe how clouds become charged.
b. What happens when the charge becomes too large?
c. How does a lightning rod work?
a. Describe how clouds become charged.
• Movement of air, ice, dust and water produces
positive ions and free electrons
• Positives end up at top of cloud and negatives
end up at bottom of cloud
b. What happens when the charge becomes too
large?
c. How does a lightning rod work?
a. Describe how clouds become charged.
• Movement of air, ice, dust and water produces
positive ions and free electrons
• Positives end up at top of cloud and negatives
end up at bottom of cloud
b. What happens when the charge becomes too
large?
• Electrons flow from the cloud to the ground in
a lightning bolt
c. How does a lightning rod work?
a. Describe how clouds become charged.
• Movement of air, ice, dust and water produces
positive ions and free electrons
• Positives end up at top of cloud and negatives
end up at bottom of cloud
b. What happens when the charge becomes too
large?
• Electrons flow from the cloud to the ground in
a lightning bolt
c. How does a lightning rod work?
• Conducts electrons from the lightning to the
ground through a wire.
Describe how electricity is produced by the following methods.
a. Nuclear:
b. Hydroelectric:
c. Fossil Fuels:
d. Wind Energy:
Describe how electricity is produced by the following methods.
a. Nuclear:
• Water is heated by nuclear fission to create steam which
turns a turbine connected to a electrical generator
b.
c.
d.
Hydroelectric:
Fossil Fuels:
Wind Energy:
Describe how electricity is produced by the following methods.
a. Nuclear:
• Water is heated by nuclear fission to create steam which
turns a turbine connected to an electrical generator
b. Hydroelectric:
•Water flows down hill usually through a dam to turn a
turbine which is connected to an electrical generator
c.
d.
Fossil Fuels:
Wind Energy:
Describe how electricity is produced by the following methods.
a. Nuclear:
• Water is heated by nuclear fission to create steam which
turns a turbine connected to an electrical generator
b. Hydroelectric:
•Water flows down hill usually through a dam to turn a
turbine which is connected to an electrical generator
c. Fossil Fuels:
•Coal is burned to heat up water to create steam which
turns a turbine connected to an electrical generator
d.
Wind Energy:
Describe how electricity is produced by the following methods.
a. Nuclear:
• Water is heated by nuclear fission to create steam which
turns a turbine connected to an electrical generator
b. Hydroelectric:
•Water flows down hill usually through a dam to turn a
turbine which is connected to an electrical generator
c. Fossil Fuels:
•Coal is burned to heat up water to create steam which
turns a turbine connected to an electrical generator
d. Wind Energy:
•Wind is used to turn turbines which is connected to
electrical generators